message_digest-8.x-1.x-dev/message_digest_ui/message_digest_ui.install

<?php

/**
 * @file
 * Install hooks for the Message Digest UI module.
 */

/**
 * Implements hook_install().
 *
 * Adds the message_digest field to the email_* flags provided by the Message
 * Subscribe Email module.
 */
function message_digest_ui_install() {
  // Add the `message_digest` field to the user form.
  $display = \Drupal::service('entity_display.repository')->getFormDisplay('user', 'user', 'default');
  if (!$display->getComponent('message_digest')) {
    $settings = [
      'type' => 'options_select',
      'settings' => [],
    ];
    $display->setComponent('message_digest', $settings);
    $display->save();
  }

  // Add the `message_digest` field to flagging types.
  $prefix = \Drupal::config('message_subscribe_email.settings')->get('flag_prefix');
  foreach (['node', 'term', 'user'] as $name) {
    $display = \Drupal::service('entity_display.repository')->getFormDisplay('flagging', $prefix . '_' . $name, 'default');
    if (!$display->getComponent('message_digest')) {
      $settings = [
        'type' => 'options_select',
        'weight' => 0,
        'region' => 'content',
        'settings' => [],
        'third_party_settings' => [],
      ];
      $display->setComponent('message_digest', $settings);
      $display->save();
    }
  }
}